Find high-quality vacuum fittings for your laboratory experiments and industrial processes. Upgrade your system with reliable fittings from USA Lab today!
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USA Lab UVP Vacuum Pump Rebuild kits
USA LabUVP-RBK$329.00 - $540.00This is a vacuum pump rebuild kit for the USA Lab UVP Vacuum Pumps.Click here for exploded view of parts (21, 34, 45) Packing List ITEM QTY Part Number Displacement valve 1 PN 320240101 Back... -
USA LAB KF25 Right Angle Valve
USA LabKF25RAV$119.00Our USA Lab KF25 Right Angle Valve is constructed from premium grade 304 Stainless Steel. It contains Viton Seals for extended usage. For Technical Support, Questions, or Other Issues Please Email or Call Us! -
USA Lab KF25 Ball Valve
USA LabKF25-BV$72.99Our USA Lab KF25 vacuum ball valve is a KF25 High Vacuum Flange to adapt to any other KF25 pump or manifold if needed and is made out of 304 stainless steel with a PTFE seat and seals. For Technical Support, Questions, or Other... -
KF25 Pressure Release Valve Stainless Steel
USA LabKF25PRV$59.95Our USA Lab Air Pressure Release KF25 Valve is a manual operated air admittance vent valve. The valves are manufactured from SS304 The plunger is sealed onto the O-ring in the valve body O-ring... -
KF25 Bellow Hose
USA LabKF25BELLOW$59.00 - $129.00.usalab-prod{--accent:#13a8b6;--ink:#0f1b2d;--muted:#64748b;--card:#f7f9fc;--ring:#e6ecf2;font-family:inherit} .usalab-prod *{box-sizing:border-box} .usalab-prod h2,.usalab-prod h3{margin:0 0 .5rem;color:var(--ink);line-height:1.2} .usalab-prod... -
USA Lab Silicone Vacuum Hose - 10FT
USA Lab$49.95 - $69.95Our Premium Silicone Vacuum Hose & Tubing is constructed with a thick wall to allow for solid, consistent vacuum pressure. -73°C to 260°C (-100°F to 500°F) Autoclaveable in low pressure steam systems up to 250°C... -
USA Lab 1.5" Tri-Clamp to PTFE Adapter
USA Lab15TCX$45.00 - $55.00The USA Lab PTFE adapter is designed connect glassware and fit it to a 1.5" Tri-clamp connection. For Technical Support, Questions, or Other Issues Please Email or Call Us! -
USA Lab KF25 4-Way Tee
USA LabKF254$45.00KF25 4Way Cross ISO-KF Flange Size: NW25 Common Dimensions: A=1.97" (50mm), B=3.94" (100mm) We ship all glassware products with additional care, but sometimes they arrive broken. If glassware arrives broken, please contact us within 3 days of... -
USA Lab KF25 Y 3-Way
USA LabKFY25Y$40.00Material: 304 Grade Stainless Steel w/ High Polish interior Size: Fits KF-25 / NW-25** Not for Tri-Clamp Fittings ** Unique KF25 Y Adapter Connection For Technical Support, Questions, or Other Issues Please Email or Call Us! -
USA LAB KF25 180 Degrees
USA LabKF25180$39.00New Sanitary Clamp KF25 180° Return Bend Available in 304 Stainless Steel We ship all glassware products with additional care, but sometimes they arrive broken. If glassware arrives broken, please contact us within 3 days of... -
USA Lab KF25 to PTFE Adapter
USA Lab$35.00The USA Lab PTFE adapter is designed connect glassware and fit it to a KF25 connector for vacuum. Vacuum leaks are no longer an issue with thick constructed PTFE and a Viton gasket on the adapter... -
USA Lab KF25 3-Way Tee
KF25-3WAY$29.95Our KF25 3-Way Stainless Steel Tee is constructed with 304 Stainless Steel to allow for sturdy high vacuum applications. Style: KF25 For Technical Support, Questions, or Other Issues Please Email or...
Vacuum Fittings From USA Lab
Parts That Keep Your Vacuum System Sealed and Running
Vacuum fittings may look simple, but they're the backbone of every vacuum system. They connect your pumps, glassware, and tubing so you get a tight seal and consistent performance. At USA Lab, you'll find a full range of fittings all built to keep your system leak-free and easy to use.
Features at a Glance
Vacuum-Rated Seals
Each fitting is tested under load to maintain reliable, leak-free performance.
Wide Compatibility
Fits with common vacuum pumps, systems, and lab glassware.
Multiple Standards Available
Choose from KF, ISO, and Tri-Clamp fittings to match your setup.
Compare Vacuum Fittings
| Fitting Type | Size Range | Best For | Key Features |
|---|---|---|---|
| KF/NW | NW16 – NW50 | General lab use | Quick clamp, easy to use |
| ISO | ISO-KF / ISO-LF | Large-scale setups | Rugged, industrial-grade |
| Tri-Clamp | 1.5" – 4" | Extraction / sanitary work | Smooth, easy-clean design |
| Other Connection Parts | Multiple | Mixed setups | Clamps and center rings, adapters and reducers, vacuum hoses and tubing connectors |
Easy to Use and Maintain
- Quick assembly — KF and Tri-Clamp connections make swapping or expanding your system fast.
- Strong support — ISO fittings provide the durability you need for larger setups.
- Low maintenance — Stainless steel and high-quality seals reduce upkeep and maximize uptime.
Match the Right Fitting to Your Work
- Need frequent assembly/disassembly? → Go with KF/NW fittings.
- Scaling up to larger systems? → Choose ISO fittings.
- Working with sanitary or extract setups? → Use Tri-Clamp fittings.
- Joining different parts together? → Grab the right adapter or reducer.
Why Choose USA Lab Vacuum Fittings
- Wide selection of KF, ISO, and Tri-Clamp parts.
- Affordable pricing with no hidden markups.
- Ships fast from our U.S. warehouse.
- Backed by real support from lab equipment pros.
Equipment That Works With Your Vacuum Fittings
Complete your vacuum line with parts and tools that keep your system running smoothly:
- Vacuum pumps to power your system
- Cold traps to protect your pump while collecting solvents and vapors
- Glassware to connect to rotary evaporators, distillation setups, or filtration systems
